Void in Space

Crown Nebula is by Casperium

A space anomaly appears in a sector close to Starbase18, The USS Enterprise is assigned to investigate, I remember one of James Blish novels,, Spock Must Die! where there is a barrier around Organia, while I was never really satisfied with the device, what if this is something like another version of the Doomsday Machine , the Enterprise is able to enter it finding the source.. not much but there it is.